As a fundamental notion beyond the celebrated Landau-Ginzburg-Wilson framework [1]}, the topological quantum matter has stimulated extensive studies in recent years, with tremendous progress having been achieved in searching for various types of topological states [2]}, [3]}, [4]}, [5]}, [6]}, [7]}. A most important feature of topological matter is the bulk-surface correspondence [2]}, [3]}, [4]}, which relates the bulk topology to boundary states and provides the foundation of most experimental characterizations and observations of topological quantum phases, such as via transport measurements [11]}, [12]}, [13]} and angle resolved photoemission spectroscopy [14]}, [15]}, [16]}.
